From: Valdis.Kletnieks-PjAqaU27lzQ@public.gmane.org
To: Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
Johannes Berg <johannes-cdvu00un1VgdHxzADdlk8Q@public.gmane.org>,
"David S. Miller" <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>,
"John W. Linville"
<linville-2XuSBdqkA4R54TAoqtyWWQ@public.gmane.org>
Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: 2.6.34-rc5-mmotm0428 - 2 RCU whinges in mac80211
Date: Thu, 06 May 2010 13:35:13 -0400 [thread overview]
Message-ID: <5820.1273167313@localhost> (raw)
[-- Attachment #1: Type: text/plain, Size: 5105 bytes --]
Spotted these in my dmesg, hopefully somebody is interested...
[ 54.076863] wlan0: deauthenticating from 00:11:20:a4:4c:11 by local choice (reason=3)
[ 54.080580]
[ 54.080581] ===================================================
[ 54.080584] [ INFO: suspicious rcu_dereference_check() usage. ]
[ 54.080586] ---------------------------------------------------
[ 54.080589] net/mac80211/sta_info.c:858 invoked rcu_dereference_check() without protection!
[ 54.080591]
[ 54.080591] other info that might help us debug this:
[ 54.080592]
[ 54.080594]
[ 54.080595] rcu_scheduler_active = 1, debug_locks = 1
[ 54.080597] no locks held by hald/3362.
[ 54.080599]
[ 54.080599] stack backtrace:
[ 54.080602] Pid: 3362, comm: hald Not tainted 2.6.34-rc5-mmotm0428 #1
[ 54.080604] Call Trace:
[ 54.080607] <IRQ> [<ffffffff81064eb9>] lockdep_rcu_dereference+0x9d/0xa5
[ 54.080619] [<ffffffff815649f9>] ieee80211_find_sta_by_hw+0x46/0x10f
[ 54.080623] [<ffffffff81564ad9>] ieee80211_find_sta+0x17/0x19
[ 54.080628] [<ffffffff8136e1ee>] iwlagn_tx_queue_reclaim+0xe7/0x1bd
[ 54.080632] [<ffffffff81371da3>] iwlagn_rx_reply_tx+0x4e9/0x5a6
[ 54.080638] [<ffffffff8136501f>] iwl_rx_handle+0x268/0x3fe
[ 54.080642] [<ffffffff813664ea>] iwl_irq_tasklet+0x2d3/0x3e4
[ 54.080647] [<ffffffff8103e337>] tasklet_action+0x79/0xd7
[ 54.080651] [<ffffffff8103fd54>] __do_softirq+0x15a/0x2a2
[ 54.080656] [<ffffffff8100358c>] call_softirq+0x1c/0x34
[ 54.080659] [<ffffffff81004ad8>] do_softirq+0x44/0xf0
[ 54.080663] [<ffffffff8103f3ba>] irq_exit+0x4a/0xb3
[ 54.080667] [<ffffffff81004211>] do_IRQ+0xa7/0xbe
[ 54.080671] [<ffffffff8159cd93>] ret_from_intr+0x0/0xf
[ 54.080673] <EOI>
[ 54.114898] wlan0: authenticate with 00:11:20:a4:4c:11 (try 1)
[ 54.122103] wlan0: authenticated
[ 54.122472] wlan0: associate with 00:11:20:a4:4c:11 (try 1)
[ 54.128267] wlan0: RX AssocResp from 00:11:20:a4:4c:11 (capab=0x31 status=0 aid=10)
[ 54.128271] wlan0: associated
[ 54.132990] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 54.133333] cfg80211: Calling CRDA for country: US
[ 54.135752]
[ 54.135753] ===================================================
[ 54.135756] [ INFO: suspicious rcu_dereference_check() usage. ]
[ 54.135758] ---------------------------------------------------
[ 54.135760] net/mac80211/sta_info.c:858 invoked rcu_dereference_check() without protection!
[ 54.135763]
[ 54.135763] other info that might help us debug this:
[ 54.135764]
[ 54.135766]
[ 54.135767] rcu_scheduler_active = 1, debug_locks = 1
[ 54.135769] 1 lock held by udevd/2933:
[ 54.135771] #0: (policy_rwlock){.+.+..}, at: [<ffffffff811d4f60>] security_compute_av+0x29/0x259
[ 54.135781]
[ 54.135782] stack backtrace:
[ 54.135785] Pid: 2933, comm: udevd Not tainted 2.6.34-rc5-mmotm0428 #1
[ 54.135787] Call Trace:
[ 54.135790] <IRQ> [<ffffffff81064eb9>] lockdep_rcu_dereference+0x9d/0xa5
[ 54.135800] [<ffffffff81564a49>] ieee80211_find_sta_by_hw+0x96/0x10f
[ 54.135804] [<ffffffff81564ad9>] ieee80211_find_sta+0x17/0x19
[ 54.135809] [<ffffffff8136e1ee>] iwlagn_tx_queue_reclaim+0xe7/0x1bd
[ 54.135813] [<ffffffff81371da3>] iwlagn_rx_reply_tx+0x4e9/0x5a6
[ 54.135819] [<ffffffff8136501f>] iwl_rx_handle+0x268/0x3fe
[ 54.135823] [<ffffffff813664ea>] iwl_irq_tasklet+0x2d3/0x3e4
[ 54.135828] [<ffffffff8103e337>] tasklet_action+0x79/0xd7
[ 54.135832] [<ffffffff8103fd54>] __do_softirq+0x15a/0x2a2
[ 54.135837] [<ffffffff8100358c>] call_softirq+0x1c/0x34
[ 54.135841] [<ffffffff81004ad8>] do_softirq+0x44/0xf0
[ 54.135844] [<ffffffff8103f3ba>] irq_exit+0x4a/0xb3
[ 54.135847] [<ffffffff81004211>] do_IRQ+0xa7/0xbe
[ 54.135852] [<ffffffff8159cd93>] ret_from_intr+0x0/0xf
[ 54.135854] <EOI> [<ffffffff811ce48b>] ? avtab_search_node+0x6c/0x7b
[ 54.135862] [<ffffffff811d4cdb>] context_struct_compute_av+0x136/0x271
[ 54.135867] [<ffffffff811d506b>] security_compute_av+0x134/0x259
[ 54.135872] [<ffffffff811c2560>] avc_has_perm_noaudit+0x22e/0x537
[ 54.135876] [<ffffffff811c289f>] avc_has_perm+0x36/0x69
[ 54.135880] [<ffffffff810c52cd>] ? __do_fault+0x254/0x3f1
[ 54.135885] [<ffffffff811c4bca>] current_has_perm+0x3a/0x3f
[ 54.135888] [<ffffffff811c4c7d>] selinux_task_create+0x17/0x19
[ 54.135893] [<ffffffff811beced>] security_task_create+0x11/0x13
[ 54.135898] [<ffffffff81036dae>] copy_process+0x8d/0x11ed
[ 54.135901] [<ffffffff810c5434>] ? __do_fault+0x3bb/0x3f1
[ 54.135905] [<ffffffff8107c26b>] ? rcu_read_lock+0x0/0x35
[ 54.135909] [<ffffffff810380b2>] do_fork+0x1a4/0x3b5
[ 54.135913] [<ffffffff8107c2c1>] ? rcu_read_unlock+0x21/0x23
[ 54.135917] [<ffffffff8107dc56>] ? audit_filter_syscall+0xb4/0xc8
[ 54.135921] [<ffffffff81059044>] ? up_read+0x1e/0x36
[ 54.135924] [<ffffffff8105d760>] ? current_kernel_time+0x28/0x50
[ 54.135929] [<ffffffff81009705>] sys_clone+0x23/0x25
[ 54.135933] [<ffffffff810029d3>] stub_clone+0x13/0x20
[ 54.135936] [<ffffffff8100266b>] ? system_call_fastpath+0x16/0x1b
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next reply other threads:[~2010-05-06 17:35 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-06 17:35 Valdis.Kletnieks-PjAqaU27lzQ [this message]
2010-05-06 17:58 ` 2.6.34-rc5-mmotm0428 - 2 RCU whinges in mac80211 Johannes Berg
2010-05-06 18:29 ` Valdis.Kletnieks
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